Type-writing machine.



G. A. SEIB.

TYPE WRITING MACHINE.

APPLICATION FILED Nov. 2|, 1917.

1 ,279,921 Patented Sept. 24, 19183 UNITED STATES PATEN oEEio.

GEORGE A. SEIB, lOF ILION, NEW YORK, ASSIGNOR TO REMINGTON TYPEWRITER COMPANY, 0F ILION, NEW YORK, A,CORPORATION 0F NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented sept. aa, isis.

Application iled November 21, 1917. Serial No. 203,089.

face of the platen from reaching the bearings of the type bars.

The main object of my invention, gen-7 erally stated, is to provi e simple and efficient means of the character specified.

To the above and other ends which will hereinafterappear my 4invention consists in the features of construction, arrangements of parts and combinations of devices set forth in the following description and particularly pointed out in the appended claims.

Figure 1 is a detail rear view of the segment and some of the associated parts with portions of the construction in section and parts broken away. l

Fig. 2 is a fragmentary plan view of the same with parts in sect10n, the View corresponding to a section taken-on the line w-fw of Fig. 1 and looking in the direction of the arrows at said line.,

Fig. 3 is a fragmentary vertical sectional View of the same taken on the line' of Fig. 1 and looking in the direction of the arrows at said line.

Fig. 4 is a detail fragmentary sectional "view of the parts, the section being taken on the line y-fq of Fig. 1 and looking in the direction of the arrows at said line.

Fig. 5 is a detail fragmentary transverse sectional view taken on the line 2 2 of Fig. 1 and looking in the direction of the arrows at said line.

In the accompanying drawings I have shown only so much of a front strike typewriting machine as may be necessary to illustrate my invention in its embodiment therein.

The type bar segment 1 is of the closed or solid type, being provided at its lower edge with guide slots or kerfs 2, which extend through the segment from front to rear thereof. This segment, in the present instance, is iXedly secured to the top plate of the` machine, designated as a whole by the reference numeral 3, and .is substantially vertically disposed and arranged below the platen 4, diagrammatically shown in Fig. 3. From an inspection of this ligure it will be observed that the rear side of the segment extends forward of the front face of the platen. The segment is preferably secured in place by headed screws 5 and 6, which extend from the front through openings in the segment and engage at their threaded ends in tapped openings in lugs or thickened bearing portions 7, which are formed on the top plate 3. The inner ends of these lugs terminate at 8, whereas thel top plate at each side or end portion of the segment extends over and covers the terminal or outer end portions of the segment and the parts carried thereby, as best shown in Fig. 2. The type bar segment is preferably formed lwith a forwardly ex- -tending flange 9, which terminates at its forward end at the forward ends of the slots 2 and forms a dust guard which prevents particles of dust 'or grit that may drop to the front side of the segment from entering the type bar bearing slots 2. A seg- .mental recess 10 is formed in the rear side of the segment to receive a pivot wire 11. This wire constitutes a pivot for the type bars 12 received and guided in the slots" observed that the universal bar also extends rearwardly beyond the rear side of the segment. A centrally disposed upwardly extending arm or finger 16 is formed on the universal bar to provide a support for a guide pin 17 which is riveted to the linger and extends into a guide opening 18 formed in the segmel-it. The universal bar is also formed with rearwardly extending arms 19 -that are operatively connected to a dog rocker as disclosed, for example, in my application, Sr. No. 118,607, filed Sept. 6, 1916.

The rear side of the segment is formed with a depression 2O in Which a ribbon vibrator, designated as a whole by the reference numeral 21, is received and adapted to work. A type guide 22 is secured yto the segment and overlapsV the depression 2O at the upper end thereof. This guide is provided at its sides with guide slots 23 in which parallel guide arms 24 on the ribbon vibrator are received, in order to guide the vibrator in its movements to and from the printing point. The lower end portion of the vibrator is formed with rearwardly projecting parallel ears 25 and a rearwardly projecting ear 25a extends from the lower end of the vibrator. A pivot or pin 26 eX- tends through a looped end or bearing `por tion 27 of a ribbon vibrator actuating arm 28 and is secured or clamped in place therein Iand projects at its ends beyond the sides of the bearing 27. The pin 26 extends into the space between the ears 25 and 25a, the former resting on the projecting ends of the pin, thus forming an operative connection between the vibrator and its" actuating arm 28. For the purpose of the present invention any suitable actuating means may be provided for the vibrator, such, for example, as that illustrated in the patent to J. H. Barr,l No. 1,153,668, dated Sept. let, 1915. To the front face of the segment are secured two fingers 30 which project upwardly from theI segment and are secured thereto by screws 31. These fingers are arranged on oppositepsides of the ribbon vibrator and perform the usual functions of the corresponding fingers in the Nos. 10 and 11Remington machines.

In rorder to prevent rubbings or particles ofgrit, which'drop from the front face of the platen or the paper thereon and which pass to the rear of the segment, from reaching the universal bar and from entering the type bar bearing slots 2 from the rear of the segment, l have provided a dust guard or lshield, which is designated as a whole by the reference numeral-32. This dust guard is preferably formed from sheet I metal and is in the nature of a fiat plate struck up at 33 to form foot pieces 34, the bearing faces of which are arranged at an angle to the'plane of the dust guard or plate, so that when the dust guard is in place, the bearing faces of the foot pieces may be vertically or substantially vertically disposed against the rear face of the segment, while the body portion of the dust guard is maintained at an inclination thereto. These foot pieces are preferably formed by indenting or swaging the body portion of thedust guard to form a recess or eavity therein between its upper and lower r edges. The rear wall of e'ach recess or cav- .Lawaai ity constitutes a foot piece which at its front face bears against and is secured to the rear face of the segment; the foot piece and the rear face of the segment being in parallelism while the upper edge of the inclined plate runs parallel with the chord of the segment and in contact with the segment. Each foot piece is apertured to receive the stem of a headed screw 35 by which the dust guard is secured in place to the rear side of the segment in such a manner that it extends in substantially a straight line across the segment and projects downwardly and rearwardly from the -upper edge portion thereof. The dust guard then overlies the universal bar where the latter projects beyond the rear side of the segment, and also overlies the rear ends of the type bars. Each end of the dust guard is notched at 36 to receive a segmental flange 37 formed at the juncture where the rear side of the segment meets a segmental depression 38 formed therein. Each end of the dust guard terminates at they inner end 8 of the associated lug 7 on the top plate, so that the dust guard or shield 32 and the top plate'form a continuous overlapping cover which prevents any particles of grit that may fall to the rear of the segment from reaching the universal bar and from working their way into the bearings of the type bars.

It will be seen that the central portion of the forward edge of the dust' guard is apertured at 39 to receive the ribbon vibrator and permit the latter to move freely in-its operation and to be moved upwardly through the opening when it is desired to detach and. remove the vibrator-f From an inspection of Fig. 2 it will be seen that this apertured portion registers with the aperture or recess 20 in the type bar segment, so that at this point the segment and dust guard are spaced apart to receive the ribbon vibrator and permit a removal thereof without detaching the dust guard from thel segment. Yet this construction is such that but little opportunity is offered for falling particles of grit passing to the type bar bearings through the openings 20 and 39 in the segment dust guard respectively, since such openings are in the main closed by thel ribbon vibrator and type guide.

The dust guard is also preferably formed with a notch or aperture 40 in the lower rear edge thereof, and about midway in the length of the guard. The purpose of this recess'is to permit the actuating arm 28 of the ribbon vibrator to work freely therein so that the dust guard will not form an obstruction against the operation of the ribbon vibrator operating mechanism. I preferably provide an auxiliary dust guard or4 shelflike projection 41, which may be formed integral with the dust guard 32 and which overlies the notch or aperture 40 in the i plate, so as to prevent any falling par-l ticles of grit from passing through the aperture. This member 41 is preferably curved in cross section as indicated in Fig. 1 in order to deflect or shed falling particles of grit in the same general manner as the inclined face of the main dust guard sheds or delects any falling particles of grit that may drop thereon.

In order that the upper edge of the dust shield 32 may be arranged in close contact with the rear side of the segment, and thus prevent any falling particles from entering between the dust shield and the segment, I preferably bevel the upper forward edge of the dust shield, as indicated at 42 in Fig. 5.

It will be understood that erasures are generally made near the printing point, usually just to the right or left of the ribbon vibrator, and that .in the main rubbings and falling particles of grit drop from the front face of the platen near the central portion of the segment. The dust shield 32, therefore, in the main, Aforms the protection against the falling particles entering or working their way into the type bar bearings from the rear of the segment. However, by reason of the fact that the top plate at each side of the dust guard forms a continuation of the latter and 'overlies the endI portions of the segment no particles of grit can fall or lodge on the universal bar, or can work their way into any of the type bar bearing slots of the segment.

Certain features of the construction may beemployed without others and various changes may be made within the spirit and scopevof myinvention.

What I claim as newand desire to secure by Letters'Patent is:

1. In 'a front strike typewriting machine, the combination' of a platen, a substantially vertically disposed closed type bar segment slotted at the lower edge thereof and arranged below the platen, a series of pivoted type bars which work in the slots in said segment and the heels of which extend beyond the rear side of the segment, a universal bar which is actuated by the ltype bars and extends beyond the rear side of the segment, and a dust guard detachably fixed to the segment at the rear side and near the top thereof and extending over and covering the rear ends of said type bars and the universal bar, said dust-guard ex-` tending across the segment in substantially a straight line and sloping downwardly and rearwardly from the segment.

2. In af front strike typewriting machine, the Acombination of a platen, a substantially vertically disposed type bar segment arranged below the platen, and a dust guard detachably secured to the rear side of the Segmente and having an opening in which a ribbon vibrator is received and through n Which the vibrator may be withdrawn.

3. In a front strike typewriting machine, the combination of a platen, a substantially vertically disposed type bar segment arranged below the platen, and a dust guard projecting from the rear side of the segment' and having an aperture therein in which a ribbon vibrator actuating arm .is received.

4. In a front strike typewriting machine, the combination of a platen, a substantially vertically disposed type bar segment arranged below the platen, a dust guard pro j'ecting from the rear side of the segment and having an aperture vtherein in which a lribbon vibrator actuating arm is received and having a shelf-like projection extending over said aperture and the actuating arm received therein.

5. In a front strike typewriting machine, the combination of a platen, a substantially vertically disposed type bar segment arranged ybelow the platen, and a dust guard vprojecting from the rear side 'of-the segment and having an aperture therein in which a ribbon vibrator actuating arm is received and having a second aperture in which a ribbon vibrator works and throughwhich the vibrator may be withdrawn. 6.' In a front strike typewriting machine, the combination of a platen, a substantially vertically disposed type bar segment arranged below the platen, upwardly and rearwardly swinging type bars pivoted to said segment, a top plate which overlies the 4segment near the end portions thereof,

and a dust guard detachably secured to the segment and projecting from the rear side thereof intermediate said overlying portions of the top plate.

7. In a front strike typewriting machine, the combination of a platen, a substantially vertically disposed type bar segment arranged below the platen, and a dust guard secured to the segment and projecting rearwardly therefrom, the segment and dust guard being spaced apart at the central portions thereof to receive a ribbon vibrator between them. j

8. In a front strike typewriting machine, the combination of a platen, a substantially vertically disposed type bar segment arranged below the platen, a dust guard secured to the segment and projecting rearwardly therefrom, the segment and dust guard being spaced apart at the central portions thereof to receive a ribbon vibrator Vbetween them, and a top plate Which'overlies the segment near the end portions thereof and terminates at each side adjacent to an end of the dust guard.

9. In a front strike typewriting machine, the combination of a platen, a substantially vertically disposed type bar segment arranged below the platen, and a dust guard secured to the segment and projecting rearwardly therefrom, the segment and dust guard being spaced apart at the central portions thereof to receive a ribbon vibrator between them, and the dust guard having an aperture therein in which a ribbon vibrator actuating arm is received and adapted to work.

l0. In a front strike typewriting machine, the combination of a platen, a substantially vertically disposed type bar segment arranged below the platen, and a flat sheetmetal dust guard secured to and projecting from the rear side .of the segment, said dust guard 'having afoot-piece struck up therefrom and the contact 'ace of which is in a plane inclined to the plane of the dust guard.

11. In a front strike typewriting machine, the combination of a platen, a substantially vertically disposed type bar segment arranged below the platen, and a fiat sheetmetal dust guard secured to and projecting from the rear side of the segment, said dust guard being apertured at one edge to receive a ribbon vibrator and apertured at the opposite edge to receive an actuating arm for said vibrator. A

12. In a front strike typewriting machine, the combination with an upright type bar segment, of a dust guard comprising a downwardly and rearwardly sloping platelike portion and foot pieces struck up therefrom in parallelism with the rear face of the segment, and means for securing said foot pieces to said segment.

13. In a front strike typewriting machine, the combination with an upright type bar segment, of a rearwardly and 'downwardly` inclined plate formed between its upper and lower edges with a recess or cavity, the rear aaraeai wall of which is parallel with and secured against the rear face of said segment.

14. In a front strike typewriting machine, the combination with a vertically arranged type bar segment, of a downwardly and rearwardly inclined dust plate the upper edge of which is parallel with the chord of said segment and contacts with said segment at that locality; said plate being cut-awayat its upper central edge portion and also at its lower central edge portion, and being also provided with vertical integral attaching portions which bear against the rear face of said segment.

15. In a front strike typewriting machine, the combination with an upright type bar segment, of a rearwardly and downwardly extending dust guard plate cut away at its lower edge portion centrally and provided over said cut-away portion with a supplemental rearwardly projecting dust guard plate.

1b.4 In a front strike typewriting machine, the combination with an upright type bar segment, of a rearwardly and downwardly extending dust guard plate cut away at its lower edge portion centrally and provided over said cut-away'lportion with a supplemental rearwardly vprojecting dust guard plate,'said supplemental dust guard plate being formed integral with the main plate, and having its side portions sloping downwardly and laterally in opposite direc- Signed at Ilion, in the county of Herkimer, and State of New York, this 16th day of November, A. D. 1917.

GEORGE Y A. snm.

Witnesses:

IJINNIE F. BURNETT, MARY C. GLEAsoN. 

